EP2394000B1 - Betonanker - Google Patents

Betonanker Download PDF

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Publication number
EP2394000B1
EP2394000B1 EP10738856.3A EP10738856A EP2394000B1 EP 2394000 B1 EP2394000 B1 EP 2394000B1 EP 10738856 A EP10738856 A EP 10738856A EP 2394000 B1 EP2394000 B1 EP 2394000B1
Authority
EP
European Patent Office
Prior art keywords
anchor
shoulder
projecting surface
anchor body
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10738856.3A
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English (en)
French (fr)
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EP2394000A1 (de
EP2394000A4 (de
Inventor
Thomas M. Espinosa
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Individual
Original Assignee
Individual
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Filing date
Publication date
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Publication of EP2394000A1 publication Critical patent/EP2394000A1/de
Publication of EP2394000A4 publication Critical patent/EP2394000A4/de
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Publication of EP2394000B1 publication Critical patent/EP2394000B1/de
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E04C5/125—Anchoring devices the tensile members are profiled to ensure the anchorage, e.g. when provided with screw-thread, bulges, corrugations
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4114—Elements with sockets
    • E04B1/4121—Elements with sockets with internal threads or non-adjustable captive nuts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4157—Longitudinally-externally threaded elements extending from the concrete or masonry, e.g. anchoring bolt with embedded head
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
    • E04C5/08—Members specially adapted to be used in prestressed constructions
    • E04C5/12—Anchoring devices
    • E04C5/122—Anchoring devices the tensile members are anchored by wedge-action
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/2652—Details of nailing, screwing, or bolting
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • E04B1/2604—Connections specially adapted therefor
    • E04B2001/268—Connection to foundations
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/35—Extraordinary methods of construction, e.g. lift-slab, jack-block
    • E04B2001/3583—Extraordinary methods of construction, e.g. lift-slab, jack-block using permanent tensioning means, e.g. cables or rods, to assemble or rigidify structures (not pre- or poststressing concrete), e.g. by tying them around the structure

Definitions

  • the present invention relates generally to an anchor embedded in a concrete structure for transferring load to the concrete structure, and particularly to an anchor embedded in a concrete structure, such as a foundation, beam or deck for attaching thereto another structure, such as a wall.
  • GB 1,090,554 discloses an anchor nut for embedding in concrete comprising a bore, screw-threaded over an intermediate portion and blind at one end, and having at least one flange which is square in plan and extends towards the open end of the bore.
  • the nut is attached to a bar and inserted into the concrete whilst it is wet, the bar being removed before the concrete has hardened to leave an access hole for a bolt.
  • FR 1.067.696 discloses a hollow plug for holding an anchor intended to hold an element in a concrete floor, comprising, on the one hand, at least one cement pipe which can be carried around a holding bolt and left in place as part of the foundation and, on the other hand, positioning elements which are arranged at the top and bottom and which have the task of holding the bolt laterally in the pipe until the grout is introduced.
  • EP 0 765 977 A2 discloses a hanging system for steel reinforced concrete structures uses an embeddment anchor with a head positioned behind a second layer of reinforcing from the load being supported.
  • An adjustable length tubular opening extends from the head to the form which forms the surface from which the load is to be supported.
  • Two sealed tube sections telescope with respect to each other for adjustment to the required distance and are held to the head by a removable plastic threaded fastener. After the concrete is poured, the fastener is removed and a threaded stud such as a rod is threaded into the head or washer through the tube
  • the present invention provides an anchor for being embedded in concrete for supporting a load, comprising the features of claim 1.
  • a wall system 2 comprises an anchor 4 embedded in a concrete structure, such as a concrete deck, beam, slab or foundation 6.
  • the anchor 4 is used to transfer load to the concrete structure.
  • the load may be in the form of another structure, such as a wall, required to be tied down to the concrete structure 6.
  • the anchor is connected to a tie rod 8 that extends inside a stud wall 10 through several floors.
  • the tie rod 8 is secured to the wall 10 at several locations with a fastener assembly 12 that expands to take up any slack that may develop in the tie rod due to wood shrinkage, load compression, load shifting, etc. after installation.
  • Connectors 14 are used to connect several sections of the tie rod 8 to make one interconnected continuous length.
  • Bearing plates 16 are used to spread the force exerted by the fastener assemblies 12 over the wood members. Examples of the fastener assemblies 12 are disclosed in applicant's co-pending application, Serial No. 11/898,479 , herein incorporated by reference.
  • a prior art anchor 18 includes a U-shaped sheet metal support 20 secured to a form board by means of nails through holes 22.
  • a threaded anchor rod 24 has its one end secured to the support 20 by means of a bottom nut 26 and a top nut 28.
  • An intervening plate 30 seats on top of the support 20.
  • the anchor 32 includes a rectangular, metallic anchor body 34 and an anchor rod 36 screwed through a threaded opening 38 in the anchor body 34.
  • the anchor rod 36 may be all-threaded or partially threaded.
  • the anchor 32 is placed inside a concrete form and held in place, such as by securing to rebars 40 with tie wire 42.
  • the anchor rod 36 is preferably screwed all the way through the opening 38 to extend below the anchor body 34.
  • the anchor body 34 is a rectangular metallic plate, preferably steel, with a top surface 33, a bottom surface 35 and vertical side surfaces 44 joined to the top and bottom surfaces. Although shown as rectangular, the anchor body 34 may be a square, pentagon, hexagon, octagon, etc. Each of the side surfaces 44 of the anchor body 34 has a recessed profile, as shown in Fig. 5 .
  • each side surface 44 has a downwardly and inwardly projecting surface 46 and an outwardly extending surface 48 to create a shoulder 50 near the bottom surface 35.
  • the surface 48 preferably starts at the top surface 34 and preferably terminated at the surface 48.
  • the surface 48 is preferably curved.
  • the surface 46 may be planar, as shown. However, the profile can be of any shape as long as it is generally recessed to form the shoulder 50. Accordingly, the surface 46 can be curved, corrugated, etc.
  • the creation of the shoulder 50 enables the side surface 44 to resist a tensile load generally indicated at 51. Further, by locating the shoulder 50 in a lower position closer to the bottom surface 35, a larger shear cone 53, shown in Fig. 6 , will be generated when the anchor rod 36 is put under tension, resulting in a stronger anchorage.
  • upper and lower nuts 54 are used to secure the anchor body 34 to the anchor rod 36.
  • the opening 36 through the anchor body 36 may be left unthreaded.
  • the side surfaces 44 of the anchor body 34 are provided with a series of recessed profiles to provide multiple shoulders 50.
  • Each of the profile has the same general shape as the profile shown in Fig. 5 , including downwardly and inwardly projecting surfaces and outwardly extending surfaces to form respective shoulders 50.
  • the multiple shoulders 50 advantageously help distribute the load on the entire surfaces 44, rather than being concentrated on a single shoulder.
  • the anchor body of Fig. 7 may also use the upper and lower nuts 54 to secure the anchor body to the anchor rod, in the manner shown in Fig. 6 , in addition to or in lieu of a threaded opening through the anchor body.
  • the anchor body 34 and the anchor rod 36 may be supported within the concrete form by a support 56.
  • Nails 58 attach the support 56 to a concrete form board (not shown) prior to pouring of the concrete.
  • the support 56 preferably formed from sheet metal bent into an inverted U-shape with a base wall 60, side walls 62 extending downwardly from opposite ends of the base wall, and feet 64 extending outwardly from the bottom of the respective side walls 62.
  • the anchor body 34 is attached to the base wall 60 by the upper and lower nuts 54, as shown in Fig. 11 .
  • the anchor body 34 may be replaced with a metallic anchor body 66, as shown in Figs. 12, 13 and 14 .
  • the anchor body 66 is circular in cross-section.
  • the anchor body 66 has top and bottom circular surfaces.
  • the anchor body 66 is threadedly secured to the anchor rod 36 via central threaded opening 68.
  • the anchor body 66 is substantially cylindrical in shape except for the recessed profile on the sidewall surface 70 that defines a shoulder 72.
  • the sidewall surface 70 has an inverted conical surface 74 and an outwardly curved surface 76 near the bottom surface 78.
  • the conical surface 74 preferably starts from the top surface 79 and proceeds downwardly and inwardly.
  • the surface 74 terminates into the curved surface 76.
  • locating the shoulder 72 near the bottom surface 78 provides a larger shear cone within the concrete structure in which the anchor is embedded, and thus provides a stronger anchorage.
  • an anchor body 80 is disclosed.
  • the anchor body 80 is circular in cross-section.
  • the anchor body 80 is threadedly secured to the anchor rod 36, which may be positioned within a concrete form, for example, by tying the anchor rod 36 to rebars 40 with tie wire 42.
  • the anchor body 80 has a central threaded opening 82 in which the anchor rod 36 is threaded.
  • the anchor body 80 is substantially cylindrical, except for its vertical side surface 84 which has a series of recessed profiles with multiple shoulders 86 formed by respective downwardly and inwardly projecting surface 88, preferably an inverted conical surface and a respective outwardly extending curved surface 90, as shown in Fig. 16 .
  • the surface 88 the preferably terminates into the surface 90. Having multiple recessed profiles with multiple shoulders 86 allows the anchor body 80 to carry a higher load. Each shoulder 86 will generate its own shear cone when the anchor is put under load, thereby providing for a stronger anchorage.
  • the anchor body 80 is secured to the anchor rod 36 with upper and lower nuts 94.
  • the opening 82 may be unthreaded.
  • the anchor body 80 may be attached to the support 56, using the upper and lower nuts 94. It should be understood that the anchor shown in Fig. 13 may also be similarly attached to the support 56.
  • the anchor 96 comprises an anchor rod 36, an anchor body 98, and upper and lower spacers 100 and 101.
  • the anchor rod 36 extends through the center of the anchor body 98.
  • the upper and lower spacers 100 and 101 allow the anchor rod 36 to be centered through the anchor body 98.
  • Upper and lower nuts 102 secure the spacers 100 and 101 to the anchor body 98 and the anchor rod 36.
  • the anchor body 98 is a tubular member, preferably circular in cross-section, with a vertical wall 104 and top and bottom openings 106 and 108.
  • the vertical wall 104 has outside surface 110 and inside surface 112.
  • the outside surface 110 is shaped with a series of recessed profiles, similar to recessed profiles on the anchor body 80 of Fig. 16 .
  • the outside surface 104 has upper and lower downwardly and inwardly projecting surfaces 114 and 116, preferably shaped as inverted conical surfaces.
  • the upper and lower surfaces 114 and 116 preferably terminate into respective outwardly extending curved surfaces 118 and 120 to define respective shoulders 122 and 124. Both shoulders 122 and 124 will generate respective shear cones when load in the direction 160 is applied on the anchor rod 36, as shown in Fig. 22 .
  • the lower shoulder 124 will generate a larger shear cone than the upper shoulder 122 due to its lower position. Multiple shoulders help to distribute the load on the wall 104 and thus make for a stronger anchorage.
  • the inside surface 112 similarly has upper and lower downwardly and inwardly extending surfaces 126 and 128, preferably shaped as inverted conical surfaces. Each surface 126 and 128 is capped at the top with respective inwardly extending curved surfaces 130 and 132. The surfaces 130 and 132 define respective inverted shoulders 134 and 136.
  • the upper and lower spacers 100 and 101 are identical to each other and are preferably made of molded plastic.
  • the spacer 100 has an outer ring 138 with radiating arms 140 joined to an inner ring 142.
  • the inner ring 142 has an opening 144 through which the anchor rod 36 passes. Openings 146 allow the concrete slurry to flow through and fill up the void inside the anchor body 98. Downwardly projecting tabs 148 engage the inner edge 150 of the wall 104.
  • the outer ring 138 is supported on top edge 152 of the wall 104.
  • the spacer 101 is identically constructed as the spacer 100, so that the same reference numbers are used to refer to identical parts.
  • the tabs 148 are shown extending upwardly to engage the lower inner edge 154.
  • the outer ring 138 engages the lower bottom edge 156.
  • concrete slurry fills up the void 158 within the anchor body 98 when the anchor 96 is embedded in the concrete structure, with the upper portion of the anchor rod 36 extending out of the structure for attachment to a load, such as another structure required to be anchored.
  • a load such as another structure required to be anchored.
  • the concrete mass within the void 158 becomes subject to compression forces, as the inverted shoulders 134 and 136 deflect the upward force toward the lower nut 102 and the threads of the anchor rod 36 located within the anchor body 98.
  • the anchor body 98 becomes a solid member, securely attached to the anchor rod 36, thereby allowing the outside shoulders 122 and 124 to counteract the pulling or tensile load on the anchor rod 36.
  • the anchor 96 may be supported on a support 162 for placement within a concrete form.
  • the support 162 is made from sheet metal bent into a U-shape, with a horizontal base wall 164, vertical side walls 166 extending downwardly from opposite ends of the base wall 164 and footers 168 extending transversely from respective bottom edges of the side walls 162.
  • the footers 168 are provided with holes 170 for the nails 172 used to attach the support 162 to a concrete form board.
  • the base wall 164 includes a central opening 174 through which the anchor rod 36 extends. Openings 176 disposed on either side of the central opening 174 communicate with the bottom opening 108 of the anchor body 96 when seated on top of the base wall 164. The openings 176 allow the concrete slurry to flow through inside the anchor body 98 to underneath the base wall 164 to minimize formation of air pockets within the anchor body 98.
  • the anchor 96 is attached to the support 162 by the lower nut 102 engaging the underside of the base wall 164 and the upper nut 102 pressing the upper spacer 100 and the anchor body 98 against the base wall 164.
  • the lower portion of the anchor rod 36 is embedded in the concrete structure while its upper portion protrudes outside for connection to a load, such as a structure required to be tied down, such as the wall structure 2, using conventional connectors, such as a nut, a threaded coupler, a ring attached to the end of the anchor rod, etc.
  • a shear cone When tension is applied on the anchor rod 36, in the upward direction for all the embodiments shown, a shear cone will develop at each of the shoulders on the vertical side surfaces of the anchor bodies.
  • the side of the shear cone is 35° from the horizontal. The lower the shoulders are, the larger will the shear cones be, thereby providing a stronger anchorage.
  • a rectangular metallic anchor body 178 similar to the anchor body 34 shown in Fig. 4 , has vertical side surfaces in a L-shaped side profile with a vertical surface 182 and a horizontal outwardly extending surface 184 to provide a shoulder 186.
  • a substantially cylindrical metallic anchor body 188 similar to the anchor body shown in Fig. 13 , has a sidewall surface 190 with a vertical cylindrical surface 192 and a horizontal outwardly extending surface to provide a shoulder 196.
  • the vertical cylindrical surface of the anchor 188 may be provided with threads 198 that provide multiple shoulders in addition to or in lieu of the bottom shoulder 196.
  • the threads 198 distribute the load on the surface 190.
  • the threads 198 provide the function of a plurality of shoulders.
  • the shoulder 196 shown in Figs. 30 and 31 may be provided by a split or C-ring ring 200 partly recessed into a circumferential groove 202 so that a portion extends outside the groove to form the shoulder.
  • a metallic cylindrical anchor body 204 is provided with multiple circumferential grooves 206 on the cylindrical surface 208.
  • Multiple split or C-rings 210 are disposed in respective grooves 206.
  • Each ring 210 is partly received in the respective groove 206 so that a portion of the rings extends outwardly beyond the cylindrical surface 208 to provide a respective shoulder 212.
  • the outside shoulders 122 and 124 on the anchor body 98 shown in Fig. 23 may be implemented with a metallic, cylindrical sleeve 214 with a plurality of circumferential grooves 216 on its outside cylindrical surface 218 that partly receive respective split or C-rings 220. Portions of the rings 220 that extend outside the grooves 216 form shoulders 222.
  • the inverted shoulder 134 shown in Fig. 23 is implemented with an inside circumferential groove 224 on an inside cylindrical surface 226 on the sleeve 214 that partly receives a split or C-ring 228 so that a portion of the ring extends outside the groove 224 to form a shoulder 230.
  • an anchor body 232 having a wedge shape in side view with a conical side wall 234, extending upwardly from the bottom from wide to narrow.
  • the body 232 is circular in cross-section.
  • the body 232 has an annular outwardly extending shoulder 236 with an upper surface 238.
  • the shoulder 236 is advantageously disposed at the bottom portion of the anchor body.
  • An opening 240 with inside threads 241 extending through the body 232 provides for attaching the body to an anchor rod.
  • the conical surface 234 provides an increased load bearing surface as compared to a cylindrical surface.
  • the opening 240 may be threadless as shown in Fig. 39 .
  • an anchor body 242 similar to the body 240 is disclosed.
  • the anchor body 242 includes a wedge shape in side view with a conical side wall 244, extending upwardly from the bottom from wide to narrow.
  • the body 242 is circular in cross-section.
  • the body 242 has an annular outwardly extending shoulder 246 with an upper surface 248.
  • the shoulder 246 is advantageously disposed at the bottom portion of the anchor body.
  • An opening 250 with inside threads 251 extending through the body 242 provides for attaching the body to an anchor rod.
  • the anchor body 242 includes an upper horizontal edge surface 252, providing an additional load bearing surface.
  • the conical surface 244 provides an increased load bearing surface as compared to a cylindrical surface.
  • the opening 250 may be threadless as shown in Fig. 42 .
  • an anchor body 254 having a wedge shape in side view with a conical side wall 256.
  • the body 254 is circular in cross-section.
  • An opening 258 with inside threads 260 extending through the body 254 provides for attaching the body to an anchor rod.
  • the conical surface 256 provides an increased load bearing surface as compared to a cylindrical surface.
  • the opening 258 may be threadless as shown in Fig. 45 .
  • an anchor body 262 similar to the body 254 is disclosed.
  • the anchor body 262 includes a wedge shape in side view with a conical side wall 264.
  • the body 262 is circular in cross-section.
  • An opening 266 with inside threads 268 extending through the body 262 provides for attaching the body to an anchor rod.
  • the anchor body 262 includes an upper horizontal edge surface 270, providing an additional load bearing surface.
  • the conical surface 264 provides an increased load bearing surface as compared to a cylindrical surface.
  • the opening 266 may be threadless as shown in Fig. 48 .
  • an anchor body 272 having a wedge shape in side view with a convex side wall 274, extending upwardly from the bottom from wide to narrow.
  • the body 272 is circular in cross-section.
  • the body 272 has an annular outwardly extending shoulder 276 with an upper surface 278.
  • An opening 280 with inside threads 282 extending through the body 272 provides for attaching the body to an anchor rod.
  • the convex surface 274 provides an increased load bearing surface as compared to a cylindrical surface.
  • the opening 280 may be threadless as shown in Fig. 51 .
  • an anchor body 284 similar to the body 272 is disclosed.
  • the anchor body 284 includes a wedge shape in side view with a convex side wall 286, extending upwardly from the bottom from wide to narrow.
  • the body 284 is circular in cross-section.
  • the body 284 has an annular outwardly extending shoulder 287 with an upper surface 289.
  • the shoulder 287 is advantageously disposed at the bottom portion of the anchor body.
  • An opening 288 with inside threads 290 extending through the body 284 provides for attaching the body to an anchor rod.
  • the anchor body 242 includes an upper horizontal edge surface 292, providing an additional load bearing surface.
  • the convex surface 286 provides an increased load bearing surface as compared to a cylindrical surface.
  • the opening 288 may be threadless as shown in Fig. 54 .
  • an anchor body 294 having a wedge shape in side view with a convex side wall 296.
  • the body 294 is circular in cross-section.
  • An opening 298 with inside threads 300 extending through the body 294 provides for attaching the body to an anchor rod.
  • the convex surface 296 provides an increased load bearing surface as compared to a cylindrical surface.
  • the opening 298 may be threadless as shown in Fig. 57 .
  • an anchor body 302 similar to the body 294 is disclosed.
  • the anchor body 302 includes a wedge shape in side view with a convex side wall 304.
  • the body 302 is circular in cross-section.
  • An opening 306 with inside threads 308 extending through the body 302 provides for attaching the body to an anchor rod.
  • the anchor body 302 includes an upper horizontal edge surface 310, providing an additional load bearing surface.
  • the convex surface 304 provides an increased load bearing surface as compared to a cylindrical surface.
  • the opening 306 may be threadless as shown in Fig. 60 .
  • an anchor body 312 similar to the anchor body 284 is disclosed.
  • the anchor body 312 includes a wedge shape with a convex side wall 314, extending upwardly from the bottom from wide to narrow.
  • the body 312 is circular in cross-section.
  • the body 312 has an annular outwardly extending shoulder 316 with an upper surface 318.
  • the shoulder 316 is advantageously disposed at the bottom portion of the anchor body.
  • An opening 320 with inside threads 322 extending through the body 312 provides for attaching the body to an anchor rod.
  • the anchor body 312 includes an upper horizontal edge surface 324, providing an additional load bearing surface.
  • a recess or undercut portion 325 is provided at a bottom portion of the anchor body 312.
  • the undercut portion 325 allows a lower placement of the shoulder 316 in the concrete when used with an anchor rod holder or support, such that disclosed in applicant's copending application, serial no. 61/202185 , incorporated herein by reference.
  • the undercut portion further allows less material to be used during manufacture without substantially decreasing the strength of the body.
  • the convex surface 314 provides an increased load bearing surface as compared to a cylindrical surface.
  • the surface 318 includes a concave, radius surface 324 and a ramping and radially extending generally horizontal surface 326 away from the surface 324, as shown enlarged in Fig. 61B .
  • the surface 326 makes at an angle 319 above the horizontal plane of about 1°-15°. The configuration of the surface 318 provides for a stronger load bearing surface when embedded in concrete.
  • undercut portion 325 and the configuration of the surface 318 are applicable to all the solid anchor bodies disclosed herein with integral shoulders.
  • an anchor body 284 with the threadless opening 288 is shown attached to an anchor rod 326 with nuts 328.
  • the anchor disclosed herein has been described for holding a structure, such as a wall, toward the foundation structure or concrete deck, the anchor can also be used to support any tensile load imposed on the anchor rod in any direction, such as a hanging weight, side attachment to a concrete column, attachment of a structure to underneath a concrete deck, etc. Accordingly it would be seen from the description that the anchor when embedded in a concrete structure will resist a tensile load on the anchor rod, regardless of the orientation of the direction of the tensile force.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Joining Of Building Structures In Genera (AREA)

Claims (16)

  1. Verankerung (32), die in Beton zum Tragen einer Last eingebettet wird, umfassend:
    a) eine Verankerungsstange (36) mit einem unteren mit einem Gewinde versehenen Abschnitt, der in eine Betonstruktur (6) eingebettet wird, und einem oberen Abschnitt, der sich aus der Betonstruktur (6) erstreckt;
    b) einen Verankerungskörper (34, 66, 80), der an dem unteren mit einem Gewinde versehenen Abschnitt angebracht ist, wobei der Verankerungskörper (34, 66, 80) eine mit einem Gewinde versehene Öffnung (38, 68, 82) aufweist, wobei der untere mit einem Gewinde versehene Abschnitt der Verankerungsstange (36) mit der mit einem Gewinde versehenen Öffnung (38, 68, 82) verschraubt ist, wobei der untere mit einem Gewinde versehene Abschnitt der Verankerungsstange (36) sich über den Verankerungskörper (34, 66, 80) hinaus erstreckt;
    c) wobei der Verankerungskörper (34, 66, 80) eine obere Fläche (33, 79) und eine untere Fläche (35, 78, 92) aufweist, die durch eine vertikale Seitenfläche (44, 70, 84) zusammengefügt sind;
    d) wobei die Seitenfläche (44, 70, 84) mindestens einen Absatz (50, 72, 86) aufweist, der sich davon erstreckt; und
    e) wobei die Seitenfläche (44, 70, 84) in dem mindestens einen Absatz (50, 72, 86) mit einer Radiusfläche (324) endet.
  2. Verankerung (32) nach Anspruch 1, wobei:
    a) der Körper (34, 66, 80) im Querschnitt kreisförmig ist; und
    b) der mindestens eine Absatz (72, 86, 122, 124) umlaufend an der Seitenfläche (70, 84, 110) angeordnet ist.
  3. Verankerung (32) nach Anspruch 2, wobei:
    a) der mindestens eine Absatz (34, 66, 80) durch eine nach unten weisende Fläche (46, 74, 88) und eine nach außen weisende Fläche (48, 76, 90) definiert ist; und
    b) die nach außen weisende Fläche (48, 76, 90) in einem Winkel ansteigt.
  4. Verankerung (32) nach Anspruch 3, wobei:
    a) die nach unten weisende Fläche (46, 74, 88) eine umgekehrt konische Fläche ist;
    b) die nach außen weisende Fläche (48, 76, 90) gekrümmt ist; und
    c) die nach unten weisende Fläche (46, 74, 88) in der nach außen weisenden Fläche (48, 76, 90) endet.
  5. Verankerung (32) nach Anspruch 3, wobei:
    a) die nach unten weisende Fläche (46, 74, 88, 234, 244) eine konische Fläche ist;
    b) die nach außen weisende Fläche (48, 76, 90, 238, 248) gekrümmt ist; und
    c) die nach unten weisende Fläche (46, 74, 88, 234, 244) in der nach außen weisenden Fläche (48, 76, 90, 238, 248) endet.
  6. Verankerung (32) nach Anspruch 3, wobei:
    a) der Körper (232, 242) keilförmig ist;
    b) die nach unten weisende Fläche (46, 74, 88, 274, 286) eine konvexe Fläche ist;
    c) die nach außen weisende Fläche (48, 76, 90, 278, 289) gekrümmt ist; und
    d) die nach unten weisende Fläche (46, 74, 88, 274, 286) in der nach außen weisenden Fläche (48, 76, 90, 278, 289) endet.
  7. Verankerung (32) nach Anspruch 2, wobei:
    a) der Körper (34, 66, 80, 98) eine Öffnung (38, 68, 82) aufweist;
    b) sich der untere Abschnitt durch die Öffnung (38, 68, 82) erstreckt;
    c) obere und untere Muttern (54, 94, 102) an den unteren Abschnitt geschraubt sind; und
    d) der Körper zwischen den oberen und unteren Muttern (54, 94, 102) eingeschlossen ist.
  8. Verankerung (32) nach Anspruch 2, wobei die Seitenfläche (44, 70, 84) eine Mehrzahl des mindestens einen umlaufenden Absatzes (50, 86, 122, 120) vertikal in Reihe zwischen der oberen Fläche und der unteren Fläche angeordnet aufweist.
  9. Verankerung (32) nach Anspruch 2, wobei der mindestens eine Absatz (72, 86, 122, 124) Gewinde (198) an der Seitenfläche (44, 70, 84) umfasst.
  10. Verankerung (32) nach Anspruch 2, und ferner umfassend Gewinde (198), die an der Seitenfläche (44, 70, 84) angeordnet sind.
  11. Verankerung (32) nach Anspruch 2, wobei:
    a) die Seitenfläche (44, 70, 84) eine umlaufende Nut (202, 216) aufweist;
    b) ein Spaltring teilweise in der Nut derart angeordnet ist, dass sich ein Abschnitt des Rings aus der Nut (202, 216) über die Seitenfläche hinaus erstreckt; und
    c) der Abschnitt des Rings den mindestens einen Absatz (212, 222) umfasst.
  12. Verankerung (32) nach Anspruch 1, wobei:
    a) der Körper (34, 66, 80) eine an dem unteren Abschnitt angebrachte metallische Platte ist;
    b) der mindestens eine Absatz (50, 72, 86) unterhalb der oberen Fläche an jeder der Seitenflächen gebildet ist, definiert durch eine nach unten weisende Fläche (46, 74, 88) und eine nach außen weisende Fläche (48, 76, 90).
  13. Verankerung (32) nach Anspruch 12, wobei die nach unten weisende Fläche (46, 74, 88) nach innen weisend und ebenflächig ist.
  14. Verankerung (32) nach Anspruch 12, wobei:
    a) die nach außen weisende Fläche (48, 76, 90) gekrümmt ist; und
    b) die nach unten weisende Fläche (46, 74, 88) in der nach außen weisenden Fläche (48, 76, 90) endet.
  15. Verankerung (32) nach Anspruch 12, wobei:
    a) die metallische Platte eine mit einem Gewinde versehene Öffnung aufweist; und
    b) der untere Abschnitt an die mit einem Gewinde versehene Öffnung geschraubt ist.
  16. Verankerung (32) nach Anspruch 12, wobei:
    a) der Körper eine Mehrzahl der Seitenflächen aufweist, die jeweils eine Mehrzahl des mindestens einen Absatzes (212, 222) vertikal in Reihe zwischen der oberen Fläche und der unteren Fläche angeordnet aufweisen; und
    b) die nach unten weisende Fläche (46, 74, 88) nach innen weisend ist.
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US9416530B2 (en) 2016-08-16
US20150308101A1 (en) 2015-10-29
US9097001B2 (en) 2015-08-04
US20170037627A1 (en) 2017-02-09
CN102341552A (zh) 2012-02-01
EP2394000A1 (de) 2011-12-14
CA2789018C (en) 2017-07-04
US20200392733A1 (en) 2020-12-17
US20110041450A1 (en) 2011-02-24
EP2394000A4 (de) 2013-12-25
CA2789018A1 (en) 2010-08-12
US11578492B2 (en) 2023-02-14

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